50 Ideas You Really Need to Know is a 18-book series first released in 2007 with contributions by Joanne Baker, Edmund Conway, and 9 others.
2010 • 1 Reader • 4
2009 • 4 Readers • 208 pages
2011 • 1 Reader
2009 • 1 Reader • 208 pages
2010 • 2 Readers • 208 pages
2007 • 1 Reader • 208 pages • 3
2007 • 3 Readers
2007 • 4 Readers • 316 pages
2008 • 1 Reader
2009 • 1 Reader • 216 pages
2007 • 1 Reader • 215 pages • 5
2007 • 1 Reader • 3
2010 • 1 Reader
2009 • 1 Reader • 208 pages • 4
2007 • 1 Reader • 156 pages
2010 • 1 Reader
2010 • 1 Reader • 207 pages
2010 • 1 Reader • 4